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3) Investments: Investments Classified by Contractual Maturity Date (Details) (USD $)
Sep. 30, 2013
Dec. 31, 2012
Amortized Cost $ 144,709,482 $ 129,449,410
HeldToMaturitySecuritiesEstimatedFairValue 156,301,416 146,217,089
Available-for-sale Securities, Amortized Cost Basis 5,583,487  
AvailableForSaleSecuritiesEstimatedFairValue 5,129,640  
Collateralized Mortgage Backed Securities
   
Amortized Cost 5,132,905 5,010,519
HeldToMaturitySecuritiesEstimatedFairValue 5,364,729 5,262,334
Redeemable Preferred Stock
   
Amortized Cost 687,118 1,510,878
HeldToMaturitySecuritiesEstimatedFairValue 708,618 1,607,765
Nonredeemable Preferred Stock
   
Available-for-sale Securities, Amortized Cost Basis   20,281
AvailableForSaleSecuritiesEstimatedFairValue   18,795
Common Stock
   
Available-for-sale Securities, Amortized Cost Basis 5,583,487  
AvailableForSaleSecuritiesEstimatedFairValue 5,129,640  
Due in 2013
   
Amortized Cost 500,000  
HeldToMaturitySecuritiesEstimatedFairValue 531,645  
DueIn2014Through2017Member
   
Amortized Cost 20,761,134  
HeldToMaturitySecuritiesEstimatedFairValue 22,545,722  
DueIn2018Through2022Member
   
Amortized Cost 45,332,609  
HeldToMaturitySecuritiesEstimatedFairValue 50,475,862  
DueAfter2022Member
   
Amortized Cost 72,295,716  
HeldToMaturitySecuritiesEstimatedFairValue $ 76,674,840